Hyundai Diagnostic Trouble Codes

OBD2 fault codes seen on Hyundai vehicles, with what each code means and the Hyundai models it shows up on. Each code's page has its typical repair cost range.

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Emissions

P0011Moderate

"A" Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)

Hyundai Tucson • 2009-2020

The Tucson was sold with the 1.6 GDI (Gamma, 2009-2020) and the 2.4 GDI (Theta, 2015-2020) petrol engines…

P0420Moderate

Catalyst System Efficiency Below Threshold (Bank 1)

Hyundai Tucson • 2009-2024

On Hyundai petrol engines (i30, Tucson, Elantra, Santa Fe with the 1.6 GDI, 2.0 Nu and 2.4 Theta II), P0420…

Fuel System

P0171Moderate

System Too Lean (Bank 1)

Hyundai i30 • 2011-2016

On the i30 with the 1.6 GDI (Gamma, 2011-2016), direct injection leaves no fuel spray to wash the intake…

Misfire

P0300High

Random/Multiple Cylinder Misfire Detected

Hyundai Santa Fe • 2012-2024

On Hyundai GDI engines (i30, Tucson, Santa Fe, Kona), a random P0300 usually comes from worn ignition coils…

Ignition

P0340High

Camshaft Position Sensor Circuit Malfunction

Hyundai i30 • 2007-2024

A failed CMP sensor causes long cranking and stalling, so check the sensor and its harness before suspecting…

P0341Moderate

Camshaft Position Sensor "A" Circuit Range/Performance

Hyundai i30 • 2007-2012

The 2007-2012 i30 (FD) has the port-injected 1.6 Gamma (G4FC), not the 1.6 GDI engine.

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